introduction oryza sativa is a crucial value monoecious perennial plant in SriLanka. mainly grown for staple traditional food animal feed. it has played an important role in the countrys functioning and survival. Srilankan people have started to tend cultivating rice as early as 800 B.C.
more than 2000 indigenous rice varieties ,some varieties of them have been passed down foe generations are called traditional.it was considered sacred and their process able to be sustained due to the methods used for production as well as the sacred associated with the process of rice cultivation. by the 1980s 90 of the farmland in srilanka was being used to cultivate the newly improved semi dwarf( newly improved) rice variety. currently , 95 of the rice produced in srilanka hybrid varieties.
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